Its not the transport and launching thats the problem.
Its the sustained operation. You only have fuel bunkerage for maybe 1 week at a reasonable sortie rate (a few a day). Increasing fuel bunkerage, reduces your jet capacity. where do bombs get stored, even just dumping 500lb, JCI weapon bunkerage is not designed for long term missions.
If you want a sustained operation you bring an oiler, but sustained operations probably are for country´s invasions, where air superiority is gained, other thing is a battle or an mass attack, in a battle if the oppenent has a supercarrier you will have to do guerrilla, which the bpe can do because for example it can launch 5 or 6 jets in a row, but also it can deploy 18 jets at the same time for at least one hour, so it can give a big battle whenever, and these capacities are coped with 600 square meters of weaponry, these meter they give for guerrilla and the give for a battle or 2 or 3 battles, when you decide it. But i would not think that a dedicated carrier of 27000 tonnes, like the bpe, would give much more than a bpe in terms of fuel bunkerage and sortie rate.
There are no dedicated aircraft maintence areas. Operating a full 20 F-35B in the air will drain your fuel bunkerage in hours.
I dont think so, you can see a very good space near the fore lift, in the light load deck, it seems a good place for that so you can use the lift space for filling jets in the "hangar" and put the right jet in that area, but i dont really know, but if spanish with more than 2 decades in naval aviation are going to use it as a carrier and has room for spares, they will be able to do much maintenance, because a typical amount of jets in a pda is 12 jets.
Drain your bunkerage in hours... 800 tonnes of jp5, for 100 loads of 8 tonnes of jp5, with 8 tonnes of jp5 in a f35b you have for a range of almost 2000 kms. So 100 full range sorties, 4 battles of 20 f35b´s, or 100 elements of guerrilla. Plus the oilers. Now 600 square meters of weaponry, of 2,5 meters of height, for example, is like 1500 cubic meters of space, you might need 6 cubic meters for 2 amraams (3,7 mts long), so you can have like hundreds of amraams, like 400 hundred?...etc.
The JCI I think does work as an emergency carrier. Load it up, ship it out, operate it for a week until you can get something more substancial there. Many missions a week of airsupport would be all thats required to capture an airport, or take out most targets with refuelled land based aircraft taking over or remove any air threats, or get Uk, France or US there with carrier support