This is from the beta page. I assume that this adresses the 2nd UV set request - ventilator works on a plugin which will do this.
ent_setmesh can be used to change the mesh of an entity, f.i. for adding lightmapping data.
I posted a request in the gile[s] forum wether there will be a "buy gile[s] 1.xx now and get gile[s] 2.0 for free" period, because I dont want to buy gile[s] and later I have to spend another hat full of golden coins for version 2.0