So it is possible to get to level 5 on the web version... 
... but success depends so heavily on your luck with weapon drops, I feel it really takes away from the potential for strategic builds and layout. You can't really go in with much of plan. Some runs deliver the lucky items that give you a shot, but most don't.
- The ability to change from defensive to offensive maneovres while in game would be another great addition.
- Lasers are hit and miss, and often don't fire when you really need them too.
- Salvaging your dead ships is worth so little, be nice if would scale with the gear you have invested in them. Once you start losing ships, it is generally game over, as the cost of resurrection cuts too deeply to allow any sort of recovery.
- Only a few of the support modules are really worth it, and a bit more thought needs to go into the boost/cut to values. For example, evasion and light hulls is a good idea, but it's currently a useless strategy.
This has the bones for a really engaging game, it just needs a few adjustments for balance. I love it, well done.