Upsides To Making A Portal To Heaven  
   To  Build   The   Factory   There    
  
                                          
 First  Of All, Real  Estate:  The Highly 
 Fractalized  Geometry  (Not  Proven  But 
 Likely  To Be  The Case)  Implies Almost 
 Unlimited Room; Even If  The Portal Tech 
 Would  Be  Stolen,  Chances  Of  Running 
 Into A  Competitor  Is  Close  To  None, 
                                          
 Secondly,  The  Resources:  Heavens  Own 
 Alchemical  Properties   (Proof  Exist!) 
 Makes  Most  Base  Materials  Easily And 
 Readily Available.  Once  The  Molecular 
 Movement  Patterns Are  Mapped Out,  Any 
 Compound   Can  Be   Created   Virtually 
 Without                            Cost. 
                                          
                                          
  
   Downsides  To  Making A  Portal To   
   Heaven To  Build The Factory  There  
  
                                          
 Current  Portal  Tech  Takes Some Energy 
 To  Hold Open, Which Isn'T A Problem  In 
 Itself. Test Results However  Has  Shown 
 That  Without An Active Tether, Heaven'S 
 Time Flow  Breaks Down  Completely. Even 
 A  Momentary  Fluctuation Of  The Portal 
 Would   Render   All    Remote    Assets 
 Practically  Lost.  Much  Care  Must  Be 
 Taken  To  Maintain  Portal   Stability. 
 (One  Option  Could  Be Several Portals)