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)